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23Na NMR studies of sodium ion interactions: Cysteine, aspartic acid, and citric acid

✍ Scribed by Thomas L. James; Joseph H. Noggle

Publisher
Elsevier Science
Year
1972
Weight
340 KB
Volume
2
Category
Article
ISSN
0006-3061

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✦ Synopsis

Xa nuclear magnetic resonance spin-lattice relaxation time measurements of aqueous sodium ion solutions containing cysteine, aspartic acid, and citric acid haee been studied as a function of PH. Results indicate there is only a very wreak interaction of cysteine and aspartic acid with sodium ion. Results with citric acid show that a sodium ion complex is formed

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17O-NMR. of Enriched Acetic Acid, Glycin
17O-NMR. of Enriched Acetic Acid, Glycine, Glutamic Acid and Aspartic Acid in Aqueous Solution. II. Relaxation Studies
✍ Ioannis P. Gerothanassis; Roger Hunston; JΓΌrgen Laulenvein πŸ“‚ Article πŸ“… 1982 πŸ› John Wiley and Sons 🌐 German βš– 607 KB

## Abstract The ^17^O‐NMR. line widths of the enriched amino acids glycine, aspartic acid, glutamic acid and, for comparative reasons, acetic acid were measured in aqueous solution between pH 1 and 14. The ^17^O‐NMR. line‐width maxima of glycine at pHβ‰ˆοΈ11 and acetic acid at pHβ‰ˆοΈ5 are shown to arise